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Create experimental interactive terminal backend (using TermKit)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,120 @@ | ||
| import Foundation | ||
| import SwiftCrossUI | ||
| import TermKit | ||
|
|
||
| public struct CursesBackend: AppBackend { | ||
| public typealias Widget = TermKit.View | ||
|
|
||
| public init(appIdentifier: String) {} | ||
|
|
||
| public func run<AppRoot: App>( | ||
| _ app: AppRoot, | ||
| _ setViewGraph: @escaping (ViewGraph<AppRoot>) -> Void | ||
| ) where AppRoot.Backend == Self { | ||
| let viewGraph = ViewGraph(for: app, backend: self) | ||
| setViewGraph(viewGraph) | ||
|
|
||
| Application.prepare() | ||
| let root = RootView() | ||
| root.addSubview(viewGraph.rootNode.widget) | ||
| Application.top.addSubview(root) | ||
| Application.run() | ||
| } | ||
|
|
||
| public func runInMainThread(action: @escaping () -> Void) { | ||
| DispatchQueue.main.async { | ||
| action() | ||
| } | ||
| } | ||
|
|
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| public func show(_ widget: Widget) { | ||
| widget.setNeedsDisplay() | ||
| } | ||
|
|
||
| public func createVStack(spacing: Int) -> Widget { | ||
| return View() | ||
| } | ||
|
|
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| public func addChild(_ child: Widget, toVStack container: Widget) { | ||
| // TODO: Properly calculate layout | ||
| child.y = Pos.at(container.subviews.count) | ||
| container.addSubview(child) | ||
| } | ||
|
|
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| public func setSpacing(ofVStack container: Widget, to spacing: Int) {} | ||
|
|
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| public func createHStack(spacing: Int) -> Widget { | ||
| return View() | ||
| } | ||
|
|
||
| public func addChild(_ child: Widget, toHStack container: Widget) { | ||
| // TODO: Properly calculate layout | ||
| child.y = Pos.at(container.subviews.count) | ||
| container.addSubview(child) | ||
| } | ||
|
|
||
| public func setSpacing(ofHStack container: Widget, to spacing: Int) {} | ||
|
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| public func createTextView(content: String, shouldWrap: Bool) -> Widget { | ||
| let label = Label(content) | ||
| label.width = Dim.fill() | ||
| return label | ||
| } | ||
|
|
||
| public func setContent(ofTextView textView: Widget, to content: String) { | ||
| let label = textView as! Label | ||
| label.text = content | ||
| } | ||
|
|
||
| public func setWrap(ofTextView textView: Widget, to shouldWrap: Bool) {} | ||
|
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| public func createButton(label: String, action: @escaping () -> Void) -> Widget { | ||
| let button = TermKit.Button(label, clicked: action) | ||
| button.height = Dim.sized(1) | ||
| return button | ||
| } | ||
|
|
||
| public func setLabel(ofButton button: Widget, to label: String) { | ||
| (button as! TermKit.Button).text = label | ||
| } | ||
|
|
||
| public func setAction(ofButton button: Widget, to action: @escaping () -> Void) { | ||
| (button as! TermKit.Button).clicked = { _ in | ||
| action() | ||
| } | ||
| } | ||
|
|
||
| // TODO: Properly implement padding container. Perhaps use a conversion factor to | ||
| // convert the pixel values to 'characters' of padding | ||
| public func createPaddingContainer(for child: Widget) -> Widget { | ||
| return child | ||
| } | ||
|
|
||
| public func getChild(ofPaddingContainer container: Widget) -> Widget { | ||
| return container | ||
| } | ||
|
|
||
| public func setPadding( | ||
| ofPaddingContainer container: Widget, | ||
| top: Int, | ||
| bottom: Int, | ||
| leading: Int, | ||
| trailing: Int | ||
| ) {} | ||
| } | ||
|
|
||
| class RootView: TermKit.View { | ||
| override func processKey(event: KeyEvent) -> Bool { | ||
| if super.processKey(event: event) { | ||
| return true | ||
| } | ||
|
|
||
| switch event.key { | ||
| case .controlC, .esc: | ||
| Application.requestStop() | ||
| return true | ||
| default: | ||
| return false | ||
| } | ||
| } | ||
| } | ||
